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3 years ago

Estimate a 15% tip on a dinner bill of $47.67 by first rounding the bill amount to the nearest ten dollars.

Mathematics

1 answer:

DENIUS [597]3 years ago

7 0

Answer:

The tip will be $7.2

And the total paid will be $55.20 or $55 rounded

Step-by-step explanation:

The equation is

48 x 0.15 = 7.2

48 + 7.2 = 55.2

55.2 rounded equals 55

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A Freight train is traveling 30 miles per hour. An automobile starts out from the same place 1 hour later and overtakes the trai

Mazyrski [523]

40 I believe because the space of the auto mobile catching up to the train is 4 hours. 4 times 30 is 120 miles so u need to figure out a number that can reach 120 in three hours. 3 times 40 is 120

5 0

2 years ago

Nuts.com sells raw almonds for $10 per pound and roasted pistachios for $12 per pound. Christopher spends $70, before taxes and

sp2606 [1]

Christopher purchased 2.8 pounds of almonds and 3.5 pounds to roasted pistachios.

Step-by-step explanation:

Cost of almonds per pound = $10

Cost of roasted pistachios = $12

Total amount spent = $70

Weight of nuts = 6.3

Let,

Weight of almonds = x

Weight of roasted pistachios = y

According to given statement;

x+y=6.3 Eqn 1

10x+12y=70 Eqn 2

Multiplying Eqn 1 by 10

$10(x+y=6.3)\\10+10y=63\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2;

$(10x+12y)-(10x+10y)=70-63\\10x+12y-10x-10y=7\\2y=7$

Dividing both sides by 2

$\frac{2y}{2}=\frac{7}{2}\\y=3.5$

Putting y=3.5 in Eqn 1

$x+3.5=6.3\\x=6.3-3.5\\x=2.8$

Christopher purchased 2.8 pounds of almonds and 3.5 pounds to roasted pistachios.

Keywords: linear equations, elimination method

Learn more about elimination method at:

#LearnwithBrainly

8 0

2 years ago

Write and simplify an algebraic expression to represent the area of the shaded region. The image is below.

Lena [83]

$(x+2)^2 - 1\cdot(x-5) = x^2 + 2\cdot2x + 2^2 - (x - 5) = x^2 + 4x + 4 - x + 5 = x^2 + 3x + 9$

4 0

3 years ago

Which expression is equivalent to 2+3

disa [49]

Answer:

Step-by-step explanation:

1. 9x^5

2. 9x^6

3. 27x^5

4. 27x^6

3 0

3 years ago

Read 2 more answers

A piggy bank contains 80 nickels and dimes the value of the coins is 5.15

dimaraw [331]

Answer: the amount of dimes is $1.15 this is also equivalent to 11 dimes and an extra nickel.

Explanation:

80 nickels =$4.00
$5.15-$4.00= $1.15
11 dimes= $1.10
1 nickel= $0.05
$1.10+$0.05= $1.15

hope this helps! :)

5 0

2 years ago